02-22-2009 05:08 AM - edited 03-06-2019 04:10 AM
Hello All,
We have Catalyst 6500 SUP-720-3B( Dual SUP ) IOS ver :12.2(33)SXH2a .
Normally working in L2 mode after reboot the Switch comes up in L3 mode. No ip routing resolves this problem till the next reboot. (The configuration has been saved in Startup-Config ).
Did someone experienced issue likes this?
02-22-2009 01:03 PM
You cannot set the device as a strict layer 2 device in a sup 720 , routing is on by default even if it takes that command . The only difference in the way it works would be the management of the switch instead of using a default gateway as you would in say a 2960 you have to use a default static route . Unless you turn on routed ports and or created layer 3 SVI's it is basically running as a layer 2 switch .
02-22-2009 09:07 PM
Do you means that no ip routing command isn't affect in a Sup 720 ?
02-22-2009 09:18 PM
HiY,
By default all the ports on the L3 ports (Routed) if you give show interface status you could see that.
To change that you have to change it to L2 using switchport command.
Chao
Vishwa
02-22-2009 09:20 PM
The 6500 series switches themselves do not support the disabling of IP routing. This command is usually used on low-end routers. Here is some Cisco documentation supporting it:
02-23-2009 02:45 AM
Hello Yossi,
we have same HW and SW but we use it as L3 device.
However, a possible workaround can be to emulate a L2 switch
instead of
no ip routing
ip default-gateway gw-ip-addr
you can use
ip routing
ip route 0.0.0.0 0.0.0.0 gw-ip-addr
then it is enough to skip to define SVIs for all the Vlans in use and your device will act as a L2 switch as desired.
Hope to help
Giuseppe
02-26-2009 01:29 AM
Thanks to all
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